a-a a-b a-i aaa aab aae aag aah aai ab- aba abb abe abg abh abi aea aeb aee aeg aeh aei ag- aga agb age agg agh agi aha ahb ahe ahg ahh ahi ai- aia aib aie aig aih aii baa bab bae bag bah bai bba bbb bbe bbg bbh bbi be- bea beb bee beg beh bei bga bgb bge bgg bgh bgi bha bhb bhe bhg bhh bhi bi- bia bib bie big bih bii eaa eab eae eag eah eai eba ebb ebe ebg ebh ebi eea eeb eee eeg ega egb ege egg egh egi eha ehb ehe ehg ehh ehi eia eib eie eig eii gaa gab gae gag gah gai gba gbe gbg gbh gbi ge- gea geb gee geg geh gei gga ggb ggg ggh ggi gha ghb ghe ghg ghh ghi gia gib gie gig gih gii h-i haa hab hae hag hah hai hba hbb hbe hbg hbh hbi he- hea heb hee heg heh hei hga hgb hge hgg hgh hgi hha hhb hhe hhg hhh hhi hia hib hie hig hih hii ia- iaa iab iae iag iah iai iba ibb ibe ibg ibh ibi ie- iea iee ieg iei iga igb ige igg igh igi iha ihb ihe ihg ihh ihi iia iib iie iih iii